If you fix the rear end I think pulling it on a dolly would be acceptable. Don't like to U-Haul about what you're pulling, if anything should happen you will be held 100% liable for the damages even if you paid for their insurance.

I pulled my mustang on a dolly for the longest time. Just brake ahead. Be cautious and just don't ride people leave a good space and you will be fine if you get the rear end fixed. If your that worried about the brakes get a trailer with brakes. Or you could do it how we do it when a rig dies on the trail....Use a tow strap and have someone in the other vehicle do the braking lol